package com.ruoyi.framework.config;

import com.ruoyi.framework.config.properties.PermitAllUrlProperties;
import com.ruoyi.framework.security.filter.JwtAuthenticationTokenFilter;
import com.ruoyi.framework.security.handle.AuthenticationEntryPointImpl;
import com.ruoyi.framework.security.handle.LogoutSuccessHandlerImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.authentication.ProviderManager;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
import org.springframework.security.config.annotation.web.configurers.HeadersConfigurer;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.authentication.logout.LogoutFilter;
import org.springframework.web.filter.CorsFilter;

/**
 * spring security配置
 *
 * @author ruoyi
 */
@Configuration
@EnableWebSecurity
public class SecurityConfig {
    /**
     * 自定义用户认证逻辑
     */
    @Autowired
    private UserDetailsService userDetailsService;

    /**
     * 认证失败处理类
     */
    @Autowired
    private AuthenticationEntryPointImpl unauthorizedHandler;

    /**
     * 退出处理类
     */
    @Autowired
    private LogoutSuccessHandlerImpl logoutSuccessHandler;

    /**
     * token认证过滤器
     */
    @Autowired
    private JwtAuthenticationTokenFilter authenticationTokenFilter;

    /**
     * 跨域过滤器
     */
    @Autowired
    private CorsFilter corsFilter;

    /**
     * 允许匿名访问的地址
     */
    @Autowired
    private PermitAllUrlProperties permitAllUrl;

    /**
     * 认证管理
     */
    @Bean
    public AuthenticationManager authenticationManager() {
        return new ProviderManager(authenticationProvider()) ;
    }

    /**
     * anyRequest          |   匹配所有请求路径
     * access              |   SpringEl表达式结果为true时可以访问
     * anonymous           |   匿名可以访问
     * denyAll             |   用户不能访问
     * fullyAuthenticated  |   用户完全认证可以访问（非remember-me下自动登录）
     * hasAnyAuthority     |   如果有参数，参数表示权限，则其中任何一个权限可以访问
     * hasAnyRole          |   如果有参数，参数表示角色，则其中任何一个角色可以访问
     * hasAuthority        |   如果有参数，参数表示权限，则其权限可以访问
     * hasIpAddress        |   如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问
     * hasRole             |   如果有参数，参数表示角色，则其角色可以访问
     * permitAll           |   用户可以任意访问
     * rememberMe          |   允许通过remember-me登录的用户访问
     * authenticated       |   用户登录后可访问
     */
    @Bean
    public SecurityFilterChain configure(HttpSecurity http) throws Exception {
        // 注解标记允许匿名访问的url
        String[] permitAllUrls = permitAllUrl.getUrls().toArray(new String[0]);
        http.authorizeHttpRequests((authorizeHttpRequests) ->
                authorizeHttpRequests
                        .requestMatchers(permitAllUrls).permitAll()
        );

        // CSRF禁用，因为不使用session
        http.csrf(AbstractHttpConfigurer::disable);
        // 禁用HTTP响应标头
        http.headers((headers) -> headers.cacheControl(HeadersConfigurer.CacheControlConfig::disable).frameOptions(HeadersConfigurer.FrameOptionsConfig::disable));

        // 认证失败处理类
        http.exceptionHandling((exceptionHandling) ->
                exceptionHandling.authenticationEntryPoint(unauthorizedHandler)
        );
        // 基于token，所以不需要session
        http.sessionManagement((sessionManagement) ->
                sessionManagement
                        .sessionCreationPolicy(SessionCreationPolicy.STATELESS)
        );
        // 过滤请求
        http.authorizeHttpRequests((authorizeHttpRequests) ->
                authorizeHttpRequests
                        // 对于登录login 注册register 验证码captchaImage 允许匿名访问
                        .requestMatchers("/login", "/register", "/captchaImage").permitAll()
                        // 静态资源，可匿名访问
                        .requestMatchers(HttpMethod.GET, "/", "/*.html", "/*/*.html", "/*/*.css", "/*/*.js", "/profile/**").permitAll()
                        .requestMatchers("/swagger-ui.html", "/swagger-resources/**", "/webjars/**", "/*/api-docs", "/druid/**").permitAll()
                        // 除上面外的所有请求全部需要鉴权认证
                        .anyRequest().authenticated()
        );

        // 添加Logout filter
        http.logout((logout) ->
                logout.deleteCookies("remove")
                        .logoutUrl("/logout")
                        .logoutSuccessHandler(logoutSuccessHandler)
        );
        // 添加JWT filter
        http.addFilterBefore(authenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
        // 添加CORS filter
        http.addFilterBefore(corsFilter, JwtAuthenticationTokenFilter.class);
        http.addFilterBefore(corsFilter, LogoutFilter.class);


        return http.build();
    }

    /**
     * 强散列哈希加密实现
     */
    @Bean
    public BCryptPasswordEncoder bCryptPasswordEncoder() {
        return new BCryptPasswordEncoder();
    }

    /**
     * 身份认证接口
     */
    @Bean
    public AuthenticationProvider authenticationProvider() {
        DaoAuthenticationProvider authProvider = new DaoAuthenticationProvider();
        // DaoAuthenticationProvider 从自定义的 userDetailsService.loadUserByUsername 方法获取UserDetails
        authProvider.setUserDetailsService(userDetailsService);
        // 设置密码编辑器
        authProvider.setPasswordEncoder(bCryptPasswordEncoder());
        return authProvider;
    }

}
